LIN network, integrated circuit and method therefor
First Claim
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1. A Linear Interconnect Network (LIN) network comprising:
- a transmit driver for communicating on a single communication bus; and
a slope control module operably coupled to a supply voltage and arranged to compare a supply voltage level provided to the slope control module by the supply voltage to a threshold voltage level, and in response thereto and via control of the transmit driver selectively apply;
a first voltage transition mode comprising a fixed DV/DT slope transition in response to the supply voltage level being below the threshold voltage level, wherein the fixed DV/DT slope transition is not based on the supply voltage level, wherein a slope of the fixed DV/DT slope transition is the same for different supply voltage levels that are below the threshold voltage level in response to the fixed DV/DT slope transition; and
a second voltage transition mode comprising a fixed time transition in response to the supply voltage level being greater than the threshold voltage level, wherein a slope of the second voltage transition mode is based on the supply voltage level, wherein the slope transition is greater for higher supply voltage levels than lower supply voltage levels above the threshold voltage level in response to the fixed time transition.
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Abstract
A LIN network comprises a transmit driver for communicating on a single communication bus. A slope control module is operably coupled to a supply voltage and arranged to identify a voltage transition, and in response thereto and via control of the transmit driver selectively apply one of: a first voltage transition mode comprising a constant DV/DT slope transition, or a second voltage transition mode comprising a fixed time transition.
6 Citations
20 Claims
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1. A Linear Interconnect Network (LIN) network comprising:
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a transmit driver for communicating on a single communication bus; and a slope control module operably coupled to a supply voltage and arranged to compare a supply voltage level provided to the slope control module by the supply voltage to a threshold voltage level, and in response thereto and via control of the transmit driver selectively apply; a first voltage transition mode comprising a fixed DV/DT slope transition in response to the supply voltage level being below the threshold voltage level, wherein the fixed DV/DT slope transition is not based on the supply voltage level, wherein a slope of the fixed DV/DT slope transition is the same for different supply voltage levels that are below the threshold voltage level in response to the fixed DV/DT slope transition; and a second voltage transition mode comprising a fixed time transition in response to the supply voltage level being greater than the threshold voltage level, wherein a slope of the second voltage transition mode is based on the supply voltage level, wherein the slope transition is greater for higher supply voltage levels than lower supply voltage levels above the threshold voltage level in response to the fixed time transition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated circuit for use in a Linear Interconnect Network (LIN) network comprising:
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a transmit driver for communicating on a single communication bus; and a slope control module operably coupled to a supply voltage and arranged to compare a supply voltage level provided from the supply voltage to a threshold voltage level, and in response thereto selectively apply; a fixed Δ
V/Δ
T slope transition mode in response to the supply voltage level being less than the threshold voltage level, wherein the fixed Δ
V/Δ
T slope is not based on the supply voltage level, wherein the fixed Δ
V/Δ
T slope transition is the same for different supply voltage levels that are below the threshold voltage level in response to the fixed Δ
V/Δ
T slope transition; anda fixed time transition mode to transitioning between a high voltage level and a low voltage level in response to the supply voltage level being greater than the threshold voltage level, wherein a slope of the fixed time transition mode is based on the supply voltage level, wherein the slope transition is greater for higher supply voltage levels than lower supply voltage levels above the threshold voltage level in response to the fixed time transition. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of communicating on a Linear Interconnect Network (LIN) network on a single communication bus, the method comprising:
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comparing a supply voltage level from a supply voltage to a threshold voltage level; and in response thereto selectively applying a voltage transition on the single communication bus, by; a first voltage transition mode comprising a fixed DV/DT slope transition in response to the supply voltage level being below the threshold voltage level, wherein the fixed DV/DT slope is not based on the supply voltage level, wherein the fixed DV/DT slope transition is the same for different supply voltage levels that are below the threshold voltage level in response to the fixed DV/DT slope transition; and a second voltage transition mode comprising a fixed time transition in response to the supply voltage level being greater a threshold voltage level, wherein a slope of the second voltage transition mode is based on the supply voltage level, wherein the slope transition is greater for higher supply voltage levels than lower supply voltage levels above the threshold voltage level in response to the fixed time transition. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification